如何在导航栏的按钮上设置图像？

Question

我需要在导航栏的添加，取消和返回按钮上放置图像。我已经完成了添加按钮，但没有得到后退按钮。

即使使用此添加按钮图像它显示回蓝色自定义button.how设置为此？

UIBarButtonItem *addButton=[[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"bar_add_button.png"] 
    style:UIBarButtonSystemItemAdd target:self    
    action:@selector(addNote)]; 

Answer 1

// Initialize the UIButton 
UIImage *buttonImage = [UIImage imageNamed:@"buttonImage.png"]; 
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom]; 
[aButton setImage:buttonImage forState:UIControlStateNormal]; 
aButton.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height); 

// Initialize the UIBarButtonItem 
UIBarButtonItem *aBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:aButton]; 

// Set the Target and Action for aButton 
[aButton addTarget:self action:@selector(aButtonClicked:) forControlEvents:UIControlEventTouchUpInside]; 

// Then you can add the aBarButtonItem to the UINavigationBar 
... 
self.navigationItem.leftBarButtonItem = aBarButtonItem; 

// Release buttonImage 
[buttonImage release];